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Spectroscopy in Solid Hydrogen Takeshi Oka Department of Chemistry and Department of Astronomy and Astrophysics The Enrico Fermi Institute, the University.

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Presentation on theme: "Spectroscopy in Solid Hydrogen Takeshi Oka Department of Chemistry and Department of Astronomy and Astrophysics The Enrico Fermi Institute, the University."— Presentation transcript:

1 Spectroscopy in Solid Hydrogen Takeshi Oka Department of Chemistry and Department of Astronomy and Astrophysics The Enrico Fermi Institute, the University of Chicago Informal seminar for the group of Zheng-Tian Lu Argonne National Laboratories, March 9, 2010 1986 - 1996

2 Molecular Hydrogen 2 electrons -e μ 0 2 protons e gμ n The principle of superposition Dirac Chapter 1 (12)Ψ = ̶ Ψ Dirac, Proc. Roy. Soc. A112, 661 (1926) S. Tomonaga, The Story of Spin (1997) S = S 1 + S 2 S = 0 I = I 1 + I 2 I = 0 para-H 2 J = 0 I = 1 ortho-H 2 J = 1 J = 0 J = 1 0 170.48 K Triple point 13.80 K

3 p-H 2 3 He 4 HeNeAr T.P. T (K)13.80--24.5683.81 T.P. P(kPa)7.03--5068.95 b.p. T (K)20.283.204.2227.0787.29 m.v.(cc/mol)23.0624.3120.9713.3927.09 crystal struc.hcpbcc hcp/bccfcc/hcp nn dist. (Å)3.783.733.63.1563.755 zero p. amp (Å)0.681.181.030.290.18 Debye T. (K)10018.4346684 0.0760.2410.182.0049.0027 Lennard-Jones potential

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